https://git.cinelerra-gg.org/git/?p=goodguy/history.git;a=history;f=cinelerra-5.1/guicast/vicon.C;h=f9978b26ebf0e917b1d7f6852a26b72dbf670c6d;hb=HEAD

So, correct line probably should be

+ * CINELERRA

+ * Copyright (C) 2016-2020 William Morrow

+ *

because work on this file (and corresponding h/inc) was done over more than just year 2020 ?